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Term 3 · Week 1 · Compound Interest

Basic problem

Basic

A regular savings account pays 0.10% per year. How much simple interest does ₱20,000 earn in one year?

Show step-by-step solution

Answer: 20 ₱

  1. I=Prt=20,000×0.001×1=20I = Prt = 20{,}000 \times 0.001 \times 1 = 20 pesos.
  2. 0.10% means 0.10 per 100, or 0.001 as a decimal.

Common errors to watch for

  • Reading 0.10% as 10% gives ₱2,000; the decimal point matters.

Budget of Work competencies

  • gm11.t3.w1.c1
    Solve problems involving compound interest, including maturity value, future value, nominal rates, and number of terms.

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